Reusing or sharing needles, really anything that can be spread through blood and drugs.. i hope this helps and sorry its so brief.
A) foods are physically broken down into smaller pieces!
your mouth brakes the food into small pieces and is the main part but chemical reaction also occurs,
the saliva in your mouth helps you swallow the food easily!
just imagine eating your food dry like doritos that will hurt! your saliva makes it a lot easier and painless!
B - biomedical therapy relies on drugs and medical procedures to improve psychological functioning. This is a type of therapy which involves giving different drug treatments to the patients with the hope of improving their psychological funcitoning.
Answer:
about 120 mph so about 2mps so 4mps
Explanation:
